package com.gwh.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.gwh.common.R;
import com.gwh.entity.Employee;
import com.gwh.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 用户登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //1. 将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password= DigestUtils.md5DigestAsHex(password.getBytes());

        //2. 根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> lqw=new LambdaQueryWrapper<>();
        lqw.eq(Employee::getUsername,employee.getUsername());
        Employee employee1=employeeService.getOne(lqw);


        //3. 如果没有查询到则返回登录失败的结果

        if(employee1==null){
            return R.error("登录失败");
        }

        //4. 密码比对,如果不一致则返回登录失败
        if(!employee1.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态,如果为已禁用的状态,则返回员工已禁用的结果
        if(employee1.getStatus()==0){
            return R.error("已禁用,登录失败");
        }

        //6. 登录成功,将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",employee1.getId());
        return R.success(employee1);
    }

    /**
     * 用户退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 添加员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> addEmployee( HttpServletRequest request,@RequestBody Employee employee){
        //设置密码初始值,为123456,需要进行加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

       // employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

       // employee.setCreateUser((Long) request.getSession().getAttribute("employee"));
       // employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));

        employeeService.save(employee);
        return R.success("添加员工成功");
    }


    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
         //1.构造分页构造器
        Page<Employee> pageInfo=new Page<>(page,pageSize);

        //2.构造条件构造器
        LambdaQueryWrapper<Employee> lqw=new LambdaQueryWrapper<>();
        //3.添加过滤条件
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //4.添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);
        //5.执行查询
        employeeService.page(pageInfo,lqw);

        return R.success(pageInfo);
    }

    /**
     *根据id查找员工
     * @param employee
     * @Param request
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){
        // employee.setUpdateUser((Long) request.getSession().getAttribute("employee"));
       // employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");

    }

    /**
     * 根据id查找员工
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> selectById( @PathVariable long id){
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }
}
